Assessment of Energy Efficiency and Flexibility Measures in Electrified Process Heat Generation Based on Simulations in the Animal Feed Industry
A large part of the energy demand in industry can be attributed to the provision of heat. To reduce greenhouse gas emissions, the energy demand must be reduced and renewable energies must be integrated. Since the capacity of renewable heat sources is often limited, the electrification of processes i...
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| Format: | Article |
| Language: | English |
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SDEWES Centre
2023-09-01
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| Series: | Journal of Sustainable Development of Energy, Water and Environment Systems |
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http://www.sdewes.org/jsdewes/pid11.0444
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| _version_ | 1797745449751281664 |
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| author | Lukas Knorr Florian Schlosser Henning Meschede |
| author_facet | Lukas Knorr Florian Schlosser Henning Meschede |
| author_sort | Lukas Knorr |
| collection | DOAJ |
| description | A large part of the energy demand in industry can be attributed to the provision of heat. To reduce greenhouse gas emissions, the energy demand must be reduced and renewable energies must be integrated. Since the capacity of renewable heat sources is often limited, the electrification of processes is a promising solution. Due to the increasing share of fluctuating renewable energies in the electricity mix, it is advantageous if consumption can be flexibly controlled. Thus, in-house energy management in industry faces many challenges. On the one hand, general consumption must be reduced through the efficient use of energy; on the other hand, load shifting and flexible use of energy may reduce both, emissions and costs. Often, however, both alternatives interfere with each other, and an either-or decision is the result. A practical efficiency and electrification measure is the use of heat pumps. This can reduce the final energy demand for heat generation, but the constant mode of operation due to the coupling of heat sources and heat sinks leaves little room for grid-serving operation. Other electrification options, such as an electric boiler, offer greater flexibility in combination with thermal storage, but have lower efficiency. To quantify the energy requirements as a basis for comparison, the heat pump as an energy efficiency option and an electrode boiler in combination with a thermal storage tank as a flexibility option are simulated along a typical demand profile in the animal feed industry. To ensure maximum heat recovery, the heat pump is optimised using pinch analysis and designed for the respective process. For the flexibility option, an operational optimisation is carried out using Linear Programming. In addition, a hybrid variant is considered using Mixed Integer Linear Programming. While no electrification measure is currently more economical than the gas reference case, the electric boiler option is significantly more expensive than a Very-High-Temperature Heat Pump. The hybrid can reduce the size of the heat pump and get a further benefit from flexible prices, which gives it cost advantages. |
| first_indexed | 2024-03-12T15:24:24Z |
| format | Article |
| id | doaj.art-163b2cd7f25c471d84a7f8d446c09de9 |
| institution | Directory Open Access Journal |
| issn | 1848-9257 |
| language | English |
| last_indexed | 2024-03-12T15:24:24Z |
| publishDate | 2023-09-01 |
| publisher | SDEWES Centre |
| record_format | Article |
| series | Journal of Sustainable Development of Energy, Water and Environment Systems |
| spelling | doaj.art-163b2cd7f25c471d84a7f8d446c09de92023-08-10T15:28:36ZengSDEWES CentreJournal of Sustainable Development of Energy, Water and Environment Systems1848-92572023-09-0111311610.13044/j.sdewes.d11.04441110444Assessment of Energy Efficiency and Flexibility Measures in Electrified Process Heat Generation Based on Simulations in the Animal Feed IndustryLukas Knorr0Florian Schlosser1Henning Meschede2 Paderborn University, Paderborn, Germany Paderborn University, Paderborn, Germany Paderborn University, Paderborn, Germany A large part of the energy demand in industry can be attributed to the provision of heat. To reduce greenhouse gas emissions, the energy demand must be reduced and renewable energies must be integrated. Since the capacity of renewable heat sources is often limited, the electrification of processes is a promising solution. Due to the increasing share of fluctuating renewable energies in the electricity mix, it is advantageous if consumption can be flexibly controlled. Thus, in-house energy management in industry faces many challenges. On the one hand, general consumption must be reduced through the efficient use of energy; on the other hand, load shifting and flexible use of energy may reduce both, emissions and costs. Often, however, both alternatives interfere with each other, and an either-or decision is the result. A practical efficiency and electrification measure is the use of heat pumps. This can reduce the final energy demand for heat generation, but the constant mode of operation due to the coupling of heat sources and heat sinks leaves little room for grid-serving operation. Other electrification options, such as an electric boiler, offer greater flexibility in combination with thermal storage, but have lower efficiency. To quantify the energy requirements as a basis for comparison, the heat pump as an energy efficiency option and an electrode boiler in combination with a thermal storage tank as a flexibility option are simulated along a typical demand profile in the animal feed industry. To ensure maximum heat recovery, the heat pump is optimised using pinch analysis and designed for the respective process. For the flexibility option, an operational optimisation is carried out using Linear Programming. In addition, a hybrid variant is considered using Mixed Integer Linear Programming. While no electrification measure is currently more economical than the gas reference case, the electric boiler option is significantly more expensive than a Very-High-Temperature Heat Pump. The hybrid can reduce the size of the heat pump and get a further benefit from flexible prices, which gives it cost advantages. http://www.sdewes.org/jsdewes/pid11.0444 electrification; process heat; energy efficiency; flexibilisation; heat pump |
| spellingShingle | Lukas Knorr Florian Schlosser Henning Meschede Assessment of Energy Efficiency and Flexibility Measures in Electrified Process Heat Generation Based on Simulations in the Animal Feed Industry Journal of Sustainable Development of Energy, Water and Environment Systems electrification; process heat; energy efficiency; flexibilisation; heat pump |
| title | Assessment of Energy Efficiency and Flexibility Measures in Electrified Process Heat Generation Based on Simulations in the Animal Feed Industry |
| title_full | Assessment of Energy Efficiency and Flexibility Measures in Electrified Process Heat Generation Based on Simulations in the Animal Feed Industry |
| title_fullStr | Assessment of Energy Efficiency and Flexibility Measures in Electrified Process Heat Generation Based on Simulations in the Animal Feed Industry |
| title_full_unstemmed | Assessment of Energy Efficiency and Flexibility Measures in Electrified Process Heat Generation Based on Simulations in the Animal Feed Industry |
| title_short | Assessment of Energy Efficiency and Flexibility Measures in Electrified Process Heat Generation Based on Simulations in the Animal Feed Industry |
| title_sort | assessment of energy efficiency and flexibility measures in electrified process heat generation based on simulations in the animal feed industry |
| topic | electrification; process heat; energy efficiency; flexibilisation; heat pump |
| url |
http://www.sdewes.org/jsdewes/pid11.0444
|
| work_keys_str_mv | AT lukasknorr assessmentofenergyefficiencyandflexibilitymeasuresinelectrifiedprocessheatgenerationbasedonsimulationsintheanimalfeedindustry AT florianschlosser assessmentofenergyefficiencyandflexibilitymeasuresinelectrifiedprocessheatgenerationbasedonsimulationsintheanimalfeedindustry AT henningmeschede assessmentofenergyefficiencyandflexibilitymeasuresinelectrifiedprocessheatgenerationbasedonsimulationsintheanimalfeedindustry |